Improvement method of common problems of Ningbo auto parts aluminum casting die

Difficult problems of die casting die:

1) . cold lines:

Cause: the development temperature of the front end of the molten soup is too low, it will be printed when it is folded

Improvement method:

1. Check whether the wall thickness is too thin (designed manufactured), fill the thinner area immediately

2. Check if the shape is easy to be filled; if the distance is far, the closed area (such as fin, protrusion), the blocked area (such as Zhejiang Hangzhou Auto parts casting aluminum factory, small arc, etc.) is easy to be filled, pay attention to whether there are ribs cold spots

3. Reduce filling time. Ways to reduce filling time:

4. Change the filling method

5. Way to raise mold temperature:

6. Increase the temperature of molten soup

7. Check the alloy composition

8. It will be useful to add escape pipe. Die casting die

9. Vacuum pump device will be useful

2) . cracks:

Reason:

1. Close in-situ stress

2. The support is cracked when ejecting trimming

Improvement method:

1. Add arc

2. Check whether there is network hotspot

3. Add time change (cold chamber machine)

4. Lift reduce mold locking time

5. Lift draft angle

6. Lift the ejector pin

7. Check whether there is dislocation deformation of grinding tools. Zhejiang low pressure aluminum casting processing factory of die casting mould

8. Check the alloy composition

3) . air outlet:

Reason:

1. The gas is mixed in the molten soup

2. The source of the steam body: melting, in the material pipe, in the abrasive tool, release agent, die casting mold

Improvement method:

1. Moderate slow speed

2. Check whether the turning of flow passage is round whether the section is decreasing

3. Check whether the total area of the escape pipe is large enough, whether it is blocked, whether the part is located in the final filling area of Zhejiang Hangzhou low pressure casting factory

4. Check whether the release agent is sprayed too much the mold temperature is too low

5. Apply vacuum pump